NECO Mathematics 2022 Objective — Question 42
Question 42 of 50 from the National Examinations Council (NECO) Mathematics 2022 Objective paper, with the correct answer and a full explanation.
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Find the volume of a cone of radius 3.5cm and vertical height 12cm. [Take pi=22/7]
- A. 72.57cm^3
- B. 88.12cm^3
- C. 105.29cm^3
- D. 154cm^3Correct
Explanation
Volume of cone = (1/3)*pi*r^2*h = (1/3) x (22/7) x 3.5^2 x 12 = 154cm^3.
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